Advertisements
Advertisements
Question
Name the device which is used to address a small gathering of people.
Advertisements
Solution
Megaphone or bullhorn is a device that is used to address a small gathering of people.
APPEARS IN
RELATED QUESTIONS
Name three devices which work on the reflection of sound.
Fill in the blank with suitable word :
An echo is simply a ................... sound.
Why are the ceilings of concert halls made curved ? Draw a labelled diagram to illustrate your answer.
State the laws of reflection of sound.
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a bare room
Which of the following device does not work on the multiple reflections of sound waves ?
What is an echo?
What are the medical applications of echo?
______ allows bats to navigate through dark caves and find insects for food.
______ is an image obtained by the use of reflected ultrasonic waves.
